Michael, I don't have a website address for the AOU list per se, but
I found the following site very helpful:

wysiwyg://7/http://www2.fwi.com/~moellering/ngs.html

(I think you need only enter the URL from www onward, but just in
case.) This is a complete page by page list of updates to the
National Geographic Field Guide, reflecting all the splits, name
changes and housecleaning in general. It says it's for the 2nd
edition, but it worked well for my 1st edition.

>Second, does anyone know of a website where I can get an up-to-date AOU
checklist for the U.S.?
Thanks again for all your help tweets!
Michael Dossett
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Chris Maack
Anchorage, AK
CMaack at compuserve.com